It does give pause to make a person wonder if a very small gene pool is the reason for this insanity... In Iraq in particular they have been marrying their first cousins and sisters for generations. It's a common practice throughout the Islamic cultures all over the world.
While it may make economic sense to know that the money stays with the relatives, it's bad news on the science level denying a larger and healthier gene pool for offspring. Inadvertantly, they may have been breeding this violence into their cultures. It is sad to see so many lives wasted when they could be doing something positive to build up their cultures.
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